<!DOCTYPE HTML>
<html>
<!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1020244 -->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1020244 - Make sure anonymous content still works after a reflow (after the canvasframe has been reconstructed)</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<div>
  <div id="test-element" style="color:red;">text content</div>
</div>
<script type="application/javascript;version=1.8">
  info("Inserting anonymous content into the document frame");
  let chromeDocument = SpecialPowers.wrap(document);
  let testElement = document.querySelector("div");
  let anonymousContent = chromeDocument.insertAnonymousContent(testElement);

  info("Modifying the style of an element in the anonymous content");
  let style = anonymousContent.setAttributeForElement("test-element",
                                                      "style", "color:green;");

  info("Toggling the display style on the document element to force reframing");
  // Note that we force sync reflows to make sure the canvasframe is recreated
  // synchronously.
  document.documentElement.style.display = "none";
  let forceFlush = document.documentElement.offsetHeight;
  document.documentElement.style.display = "block";
  forceFlush = document.documentElement.offsetHeight;

  info("Checking that the anonymous content can be retrieved still");
  style = anonymousContent.getAttributeForElement("test-element", "style");
  is(style, "color:green;", "The anonymous content still exists after reflow");

  info("Removing the anonymous content");
  chromeDocument.removeAnonymousContent(anonymousContent);
</script>
</body>
</html>
